Sniper, On reading your sales page I reckon you should mention exactly how much they will save in your opening headline, it's a bit vague, so mention saving $436 off the cost of a normal computer or whatever. Also the videos idea you mentioned earlier is a winner idea and would boost sales I think. You have to think about who your market is. Most people that think about building their own computer are very IT literate and would know all this information. Any non tech person wouldn't dream of building their own computer. So you need to decide what your target market is and write directly to them, don't try include a broad range of people.
Best of luck..